Grundfos Circulating Pump ALPHA Solar 25-75 BL:130mm,1x230V 9H, No. 98989299

High-efficiency circulator ALPHA SOLAR 25-75 130 High-efficiency circulator ALPHA SOLAR for use in solar thermal systems with variable or constant volume flow. However, high-efficiency pumps with electronically commutated motors (ECM), such as the ALPHA SOLAR, must not be controlled by an external speed controller that changes or varies the supply voltage. The speed can be controlled via a pulse width modulated signal (PWM signal) supplied by the solar system control to optimize solar energy yield and system temperature. This also significantly reduces the pump's power consumption. If no PWM signal is available, the ALPHA SOLAR can be set to one of 4 constant speeds. The pump is then only switched on and off by the control system. Versions/Functions/Features: - High-efficiency EC permanent magnet motor technology - Energy Efficiency Index (EEI) ? 0.20 according to EN 16297-3: 2012 Best in Class - PWM profile C. The PWM signal is a method for generating an analog signal from a digital source - 4 constant speeds - Maintenance-free - Low noise - Easy installation - Deblocking screw - Max. ambient temperature +70Celsius Pumping medium: Pumping medium: Water Medium temperature range: 2 .. 110 Celsius Medium temp. during data acquisition: 60 Celsius Density: 983.2 kg/m3 Technical data: Rated flow rate: 1.85 m3/h Rated head: 3.285 m Pump head orientation: 9H Temperature class: 110 Approvals: CE,VDE,EAC Materials: Pump casing: Grey cast iron Pump casing: EN 1561 EN-GJL-150 Pump casing: ASTM A48-150B Impeller material: Composite material Impeller: PES 30% GF + PESU-GF20% Installation: Ambient temperature: 2 .. 70 Celsius Max. operating pressure: 10 bar Connection type: G Connection size: 1 1/2 inch Nominal pressure rating: PN 10 Installation length: 130 mm Electrical data: Minimum power consumption P1: 2 W Power consumption P1: 45 W Mains frequency: 50 / 60 Hz Rated voltage: 1 x 230 V Maximum current consumption: 0.04 .. 0.48 A Protection class (according to IEC 34-5): X4D Insulation class (IEC 85): F Other: Energy efficiency index (EEI): 0.20 Net weight: 2.03 kg Gross weight: 2.22 kg Shipping volume: 0.004 m3 Country of origin: DK Customs tariff no.: 84137030